Kinematics Question 118

Question: A man goes 10m towards North, then 20m towards east then displacement is [KCET 1999; JIPMER 1999; AFMC 2003]

Options:

A) 22.5m

B) 25m

C) 25.5m

D) 30m

Show Answer

Answer:

Correct Answer: A

Solution:

$ \vec{r}=20\hat{i}+10\hat{j} $
$ \therefore \ $

$ r=\sqrt{20^{2}+10^{2}}=22.5 $ m



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